Vortex turbulence tower for absorbing high-concentration chlorine

Abstract

The utility model relates to the field of environmental protection equipment, and discloses a vortex turbulence tower for absorbing high-concentration chlorine, which comprises a gas equalizing chamber, two hydrocyclones, a purification cylinder and a demisting chamber, the gas equalizing chamber, the hydrocyclones, the purification cylinder and the demisting chamber form a tubular container, the two hydrocyclones are communicated with the upper side and the lower side of the purification cylinder, and the two hydrocyclones are communicated with the purification cylinder. The gas uniformizing chamber is communicated with the bottom of the lower cyclone, the demisting chamber is communicated with the top of the upper cyclone, a slurry outlet and a flue gas inlet are formed in the gas uniformizing chamber, and a flue gas outlet is formed in the demisting chamber. The utility model has the following advantages and effects: the vortex turbulence absorption tower is adopted to replace the existing turbulent ball absorption tower in the chlorine absorption process of the metal calcium production line, so that the problem of low production efficiency in the existing chlorine absorption process is solved, and the vortex turbulence absorption tower improves the reaction rate by enhancing the intensity of gas-liquid contact; the method has high economic benefits and environmental protection benefits.

Description

TECHNICAL FIELD

[0001] The utility model relates to environmental protection equipment technical field, especially relate to a kind of for high concentration chlorine absorption vortex turbulent tower, it can be used to absorb high concentration chlorine gas produced in electrolytic fused calcium chloride in metal calcium production process. BACKGROUND

[0002] Metallurgical industry metal calcium production process electrolytic calcium chloride can produce high concentration chlorine gas (usually 10000mg / Nm 3 Above), domestic metal calcium production procedure chlorine absorption equipment currently uses turbulent ball tower, the resistance of this tower type operation is big, absorption efficiency is low, operation is unstable (built-in turbulent ball needs to be parked regularly and cleaned), field production environment is poor, and labor intensity is big;Under the increasingly strict environmental protection requirement of country, the end chlorine emission index of existing production device has also not reached relevant industry standard (lower than 8mg / Nm 3 ), therefore we propose a kind of for high concentration chlorine absorption vortex turbulent tower. INVENTION CONTENTS

[0003] The utility model aims at providing a kind of for high concentration chlorine absorption vortex turbulent tower, by using vortex turbulent absorption tower to replace existing turbulent ball absorption tower in metal calcium production line chlorine absorption procedure, to improve the problem of low production efficiency of existing chlorine absorption procedure, vortex turbulent absorption tower can greatly improve chlorine gas and lime milk absorption reaction efficiency and equipment operation stability, while high absorption rate also reduces tail gas pollutant emission concentration, has very high economic benefit and environmental protection benefit.

[0004] The above technical purpose of the utility model is realized by the following technical scheme: a kind of for high concentration chlorine absorption vortex turbulent tower, including gas chamber, cyclone, purification cylinder and demisting chamber, the gas chamber, cyclone, purification cylinder and demisting chamber constitute a tubular container, the cyclone is equipped with two upper and lower sides communicated with the purification cylinder, the gas chamber is communicated in the bottom of lower cyclone, the demisting chamber is communicated in the top of upper cyclone, the gas chamber is opened in the upper slurry outlet and flue gas inlet, the demisting chamber is opened in the upper flue gas outlet, the cyclone is opened in the upper slurry inlet and lower slurry inlet.

[0005] By adopting the above technical scheme, in a tubular container, the flue gas to be treated accelerated by the uniform gas chamber enters the container from the lower end of the container at a certain angle to form a rotating upward turbulent flow, collides with the unstable solution flowing downward from the upper end of the container, the flue gas high-speed rotary cuts the downward solution, the solution is cut, the gas-liquid continuously collides and rotary cuts, the liquid droplets are more and more fine, the gas-liquid is fully mixed to form a stable turbulent emulsion layer, in the turbulent upward process of the lime slurry, the emulsion layer gradually thickens, the upward gas power and the gravity of the emulsion reach balance, the emulsion layer continues to thicken, the emulsion formed early is replaced by the newly formed emulsion, and the emulsion carrying the captured impurities flows through the uniform gas chamber to the bottom of the absorption tower and is discharged from the slurry outlet; When filtering in the purification cylinder, as long as there is enough flue gas flow to be treated, a relatively stable turbulent emulsion layer will always be maintained, the flue gas containing harmful substances participates in the turbulent emulsification process when filtering in the purification cylinder; Due to the effect of the cyclone in the upper part of the vortex turbulent tower, the specific surface area of the liquid droplets is several times to several tens of times larger than that of the water film and the spray dust removal method, so the efficiency of capturing and absorbing harmful substances per unit liquid volume is significantly increased, and for harmful substances, the liquid droplets are finer, which is more conducive to the chemical absorption process. The reaction rate of chlorine gas and lime milk in the vortex turbulent tower can reach 100% or more, after high-concentration chlorine gas is completely absorbed by the lime slurry, liquid droplets and particulate matter are removed through a demisting chamber at the top of the tower, and the purified flue gas is discharged through a flue gas outlet.

[0006] The utility model further provides: the upper slurry inlet and the lower slurry inlet are supplied with lime milk slurry by the same circulating pump.

[0007] The utility model further provides: the aperture of the upper slurry inlet is larger than the aperture of the lower slurry inlet.

[0008] By adopting the above technical scheme, the flow balance of the upper slurry inlet and the lower slurry inlet is realized.

[0009] The utility model further provides: a flushing water inlet is formed in the demisting chamber.

[0010] By adopting the above technical scheme, the cyclone can be washed regularly through the flushing water inlet, and the lime slurry adhered to the cyclone can be washed off.

[0011] The utility model further provides: a manhole door is arranged on the demisting chamber, and a lens manhole door is arranged on the cyclone and the purification cylinder.

[0012] The utility model further provides: an instrument interface is further arranged on the demisting chamber.

[0013] The utility model further provides: the tubular container is preferably a circular tubular container.

[0014] By adopting the technical scheme, the gas and the solution can be reacted more favorably.

[0015] The utility model discloses the beneficial effect is: through in the metal calcium production line chlorine absorption procedure adopts the vortex turbulent absorption tower to replace the existing turbulent ball absorption tower to improve the low -yield problem of the existing chlorine absorption procedure, the absorption reaction of high -concentration chlorine and lime milk is acid -base neutralization chemical reaction, under the same condition, the more sufficient gas -liquid contact is, the faster reaction rate is, and the vortex turbulent absorption tower is just through enhancing gas -liquid contact intensity to improve reaction rate, and the vortex turbulent absorption tower can improve chlorine and lime milk absorption reaction efficiency and equipment operation stability greatly, and high absorption rate reduces tail gas pollutant emission concentration simultaneously and saves equipment investment, has very high economic benefit and environmental protection benefit, and the vortex turbulent absorption tower is applied to the chlorine absorption industry, and it is also a kind of innovation in technology and process. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical scheme in the embodiment of the utility model, the following will be needed to use the drawings in the embodiment description briefly introduced, obviously, the following description in the drawings is only some embodiments of the utility model, and for those skilled in the art, under the premise of not paying creative labor, other drawings can also be obtained according to these drawings.

[0017] Fig. 1 It is the structure schematic diagram of the utility model;

[0018] Fig. 2 It is the side structure schematic diagram of the utility model.

[0019] In the drawing, 1, uniform gas chamber;2, cyclone;3, purification cylinder;4, demisting chamber;5, slurry outlet;6, flue gas inlet;7, flue gas outlet;8, upper slurry inlet;9, lower slurry inlet;10, flush water inlet;11, manhole door;12, lens manhole door;13, instrument interface. DETAILED DESCRIPTION

[0020] The technical scheme of the utility model will be described clearly and completely in combination with specific embodiments. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the utility model.

[0021] Please refer to Figs. 1-2The utility model provides a kind of vortex turbulent tower for high concentration chlorine absorption, including gas distribution chamber 1, cyclone 2, purification cylinder 3 and demisting chamber 4, the gas distribution chamber 1, cyclone 2, purification cylinder 3 and demisting chamber 4 constitute a tubular container, the cyclone 2 is equipped with two upper and lower sides of communication in the purification cylinder 3, the gas distribution chamber 1 is communicated in the bottom of cyclone 2 below, the demisting chamber 4 is communicated in the top of cyclone 2 above, the gas distribution chamber 1 is opened with slurry outlet 5 and flue gas inlet 6 on, the demisting chamber 4 is opened with flue gas outlet 7 on, the cyclone 2 is opened with upper slurry inlet 8 and lower slurry inlet 9 on.

[0022] In a tubular container, the flue gas to be treated accelerated by gas distribution chamber 1 enters the container from the lower end of the container at a certain angle, forming a rotating upward turbulent flow, which collides with the unstable solution flowing downward from the upper end of the container. The flue gas high-speed rotary cutting flows downward solution, the solution is chopped, the gas-liquid phase continues to collide and rotate, the liquid droplets are crushed more and more fine, the gas-liquid is fully mixed, forming a stable turbulent emulsion layer. In the process of lime slurry upward turbulent flow, the emulsion layer gradually thickens, the aerodynamic force of the upward flow and the gravity of the emulsion reach balance, the emulsion layer continues to thicken, the emulsion formed early is replaced by newly formed emulsion, carrying the captured impurities flows through the gas distribution chamber 1 and falls to the bottom of the absorption tower, and is discharged from the slurry outlet 5. When filtering in the purification cylinder 3, as long as there is enough flue gas flow to be treated, a relatively stable turbulent emulsion layer will be maintained. The flue gas containing harmful substances participates in the turbulent emulsification process when filtering in the purification cylinder 3. The harmful substances carried by the flue gas come into contact with the fine liquid droplets in the emulsion layer. Due to the effect of the cyclone 2 at the upper part of the vortex turbulent tower, the specific surface area of the liquid droplets is several to tens of times larger than that of the water film and spray dust removal method. Therefore, the efficiency of capturing and absorbing harmful substances per unit liquid volume is significantly increased. For harmful substances, liquid droplets tend to be fine, which is more conducive to the chemical absorption process. The reaction rate of chlorine and lime milk in the vortex turbulent tower can reach more than 95%. After high concentration chlorine is completely absorbed by lime slurry, the purified flue gas passes through the demisting chamber 4 to remove liquid droplets and particulate matter, and is discharged through the flue gas outlet 7.

[0023] The upper slurry inlet 8 and the lower slurry inlet 9 are supplied with lime milk slurry by the same circulating pump. The pore size of the upper slurry inlet 8 is larger than that of the lower slurry inlet 9, achieving the balance of flow rate of the upper slurry inlet 8 and the lower slurry inlet 9.

[0024] The demisting chamber 4 is provided with a washing water inlet 10. The cyclone 2 can be washed regularly through the washing water inlet 10 to wash off the lime slurry adhered to the cyclone 2.

[0025] The demisting chamber 4 is provided with a manhole door 11. The cyclone 2 and the purification cylinder 3 are both provided with a lens manhole door 12. The demisting chamber 4 is also provided with an instrument interface 13.

[0026] The tubular container is preferably a circular tubular container, which is more conducive to the reaction of the gas and the solution.

[0027] The problem of low production efficiency of the existing chlorine absorption process is solved by replacing the existing turbulent ball absorption tower with a vortex turbulent absorption tower in the chlorine absorption process of the metal calcium production line. The absorption reaction of high-concentration chlorine gas and lime milk is an acid-base neutralization chemical reaction. Under the same conditions, the more sufficient the gas-liquid contact, the faster the reaction rate. The vortex turbulent absorption tower improves the reaction rate by enhancing the intensity of gas-liquid contact. The vortex turbulent absorption tower can greatly improve the absorption reaction efficiency of chlorine gas and lime milk and the stability of equipment operation. High absorption rate not only reduces the emission concentration of tail gas pollutants but also saves equipment investment, which has high economic and environmental benefits. The application of the vortex turbulent absorption tower in the chlorine absorption industry is also a technological and process innovation.

Claims

1. A vortex turbulent tower for high concentration chlorine absorption, characterized in that, It comprises a gas equalizing chamber (1), a cyclone (2), a purification cylinder (3) and a demisting chamber (4), the gas equalizing chamber (1), the cyclone (2), the purification cylinder (3) and the demisting chamber (4) constitute a tubular container, the cyclone (2) is provided with two upper and lower sides communicated with the purification cylinder (3), the gas equalizing chamber (1) is communicated at the bottom of the lower cyclone (2), the demisting chamber (4) is communicated at the top of the upper cyclone (2), the gas equalizing chamber (1) is provided with a slurry outlet (5) and a flue gas inlet (6) on the top, the demisting chamber (4) is provided with a flue gas outlet (7) on the top, the cyclone (2) is provided with an upper slurry inlet (8) and a lower slurry inlet (9) on the top.

2. A vortex turbulent tower for high concentration chlorine absorption according to claim 1, characterized in that: The upper slurry inlet (8) and the lower slurry inlet (9) are supplied with lime milk slurry by the same circulating pump.

3. A vortex turbulent tower for high concentration chlorine absorption according to claim 2, characterized in that: The aperture of the upper slurry inlet (8) is larger than that of the lower slurry inlet (9).

4. A vortex turbulent tower for high concentration chlorine absorption according to claim 3, characterized in that: The demisting chamber (4) is provided with a flushing water inlet (10) on the top.

5. A vortex turbulent tower for high concentration chlorine absorption according to claim 4, characterized in that: The demisting chamber (4) is provided with a manhole door (11) on the top, the cyclone (2) and the purification cylinder (3) are both provided with a lens manhole door (12).

6. A vortex turbulent tower for high concentration chlorine absorption according to claim 5, characterized in that: The demisting chamber (4) is further provided with an instrument interface (13).

7. A vortex turbulent tower for high concentration chlorine absorption according to claim 6, characterized in that: The tubular container is a circular tubular container.

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